Package org.eclipse.aether.util.graph.transformer

Class ConfigurableVersionSelector.VersionConvergence

java.lang.Object

org.eclipse.aether.util.graph.transformer.ConfigurableVersionSelector.VersionConvergence

All Implemented Interfaces:

ConfigurableVersionSelector.SelectionStrategy

Enclosing class:

ConfigurableVersionSelector

public static class ConfigurableVersionSelector.VersionConvergence
extends java.lang.Object
implements ConfigurableVersionSelector.SelectionStrategy

Example selection strategy (used in tests and demos), is not recommended to be used in production.

Selection strategy that delegates to another selection strategy, and at the end enforces dependency convergence among candidates.

Constructor Summary

Constructors

Constructor	Description
VersionConvergence(ConfigurableVersionSelector.SelectionStrategy delegate)

Method Summary

Modifier and Type	Method	Description
boolean	isBetter(ConflictResolver.ConflictItem candidate, ConflictResolver.ConflictItem winner)	Invoked for every "candidate" when winner is already set (very first candidate is set as winner).
ConflictResolver.ConflictItem	winnerSelected(ConflictResolver.ConflictItem winner, java.util.Collection<ConflictResolver.ConflictItem> candidates, ConflictResolver.ConflictContext context)	Method invoked at version selection end, just before version selector returns.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VersionConvergence

public VersionConvergence(ConfigurableVersionSelector.SelectionStrategy delegate)

Method Detail

isBetter

public boolean isBetter(ConflictResolver.ConflictItem candidate,
                        ConflictResolver.ConflictItem winner)

Description copied from interface: ConfigurableVersionSelector.SelectionStrategy

Invoked for every "candidate" when winner is already set (very first candidate is set as winner).

This method should determine is candidate "better" or not and should replace current winner. This method is invoked whenever candidate is "considered" (fits any constraint in effect, if any).

Specified by:

isBetter in interface ConfigurableVersionSelector.SelectionStrategy

winnerSelected

public ConflictResolver.ConflictItem winnerSelected(ConflictResolver.ConflictItem winner,
                                                    java.util.Collection<ConflictResolver.ConflictItem> candidates,
                                                    ConflictResolver.ConflictContext context)
                                             throws org.eclipse.aether.collection.UnsolvableVersionConflictException

Description copied from interface: ConfigurableVersionSelector.SelectionStrategy

Method invoked at version selection end, just before version selector returns. Note: winner may be null, while the rest of parameters cannot. The parameter candidates contains all the "considered candidates", dependencies that fulfil all constraints, if present. The context on the other hand contains all items participating in conflict.

This method by default just returns the passed in winner, but can do much more.

Specified by:

winnerSelected in interface ConfigurableVersionSelector.SelectionStrategy

Throws:

org.eclipse.aether.collection.UnsolvableVersionConflictException